JPS57117106A - Optical magnetic recording and reproducing method - Google Patents

Optical magnetic recording and reproducing method

Info

Publication number
JPS57117106A
JPS57117106A JP56001161A JP116181A JPS57117106A JP S57117106 A JPS57117106 A JP S57117106A JP 56001161 A JP56001161 A JP 56001161A JP 116181 A JP116181 A JP 116181A JP S57117106 A JPS57117106 A JP S57117106A
Authority
JP
Japan
Prior art keywords
recording
erasing
track
magnetic field
magnetic recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56001161A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0321961B2 (de
Inventor
Kiichi Kato
Tsuneo Yanagida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP56001161A priority Critical patent/JPS57117106A/ja
Priority to US06/336,319 priority patent/US4472748A/en
Publication of JPS57117106A publication Critical patent/JPS57117106A/ja
Publication of JPH0321961B2 publication Critical patent/JPH0321961B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10517—Overwriting or erasing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
JP56001161A 1981-01-09 1981-01-09 Optical magnetic recording and reproducing method Granted JPS57117106A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56001161A JPS57117106A (en) 1981-01-09 1981-01-09 Optical magnetic recording and reproducing method
US06/336,319 US4472748A (en) 1981-01-09 1981-12-31 Method of processing information signal with respect to opto-magnetic record medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001161A JPS57117106A (en) 1981-01-09 1981-01-09 Optical magnetic recording and reproducing method

Publications (2)

Publication Number Publication Date
JPS57117106A true JPS57117106A (en) 1982-07-21
JPH0321961B2 JPH0321961B2 (de) 1991-03-25

Family

ID=11493706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001161A Granted JPS57117106A (en) 1981-01-09 1981-01-09 Optical magnetic recording and reproducing method

Country Status (2)

Country Link
US (1) US4472748A (de)
JP (1) JPS57117106A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883347A (ja) * 1981-11-09 1983-05-19 Canon Inc 光磁気記録装置
JPS58128037A (ja) * 1982-01-22 1983-07-30 Sharp Corp 磁気光学ヘツド
JPS5982646A (ja) * 1982-10-29 1984-05-12 Sharp Corp 光磁気記憶装置
JPS59113507A (ja) * 1982-12-21 1984-06-30 Nec Corp 光磁気記録再生消去方法及びその装置
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
FR2552576A1 (fr) * 1983-09-26 1985-03-29 Philips Nv Procede d'enregistrement d'information dans un support d'information magneto-optique, dispositif de mise en oeuvre du procede et support d'information magneto-optique a utiliser dans un dispositif de mise en oeuvre du procede
EP0144436A1 (de) * 1983-04-22 1985-06-19 Matsushita Electric Industrial Co., Ltd. Optische aufzeichnungs- und wiedergabevorrichtung
JPS60129954A (ja) * 1983-12-19 1985-07-11 Matsushita Electric Ind Co Ltd 光磁気デイスクレコ−ダ
EP0164745A2 (de) * 1984-06-13 1985-12-18 Hitachi, Ltd. Methode und Gerät für die Informationsaufnahme/Wiedergabe gebrauchmachend von, durch Licht induzierte thermo-magnetischen Effekten
JPS6374146A (ja) * 1986-09-18 1988-04-04 Fujitsu Ltd 光磁気デイスクの記録方法
JPH0329138A (ja) * 1990-04-13 1991-02-07 Sanyo Electric Co Ltd 情報読取装置
US4993011A (en) * 1986-03-19 1991-02-12 Sanyo Electric Co., Ltd. Optical recording apparatus with simultaneous erasing and recording
WO1997006530A1 (fr) * 1995-08-09 1997-02-20 Hitachi, Ltd. Dispositif de disque optique
US6414912B1 (en) 1998-02-04 2002-07-02 Hitachi, Ltd. Optical disk device using a recording medium structurally arranged to generate a recording clock

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605441A (ja) * 1983-06-23 1985-01-12 Canon Inc 情報処理装置
JPS6053863A (ja) * 1983-09-05 1985-03-27 Sony Corp 磁気記録媒体の磁化方向検出装置
JPS60236137A (ja) * 1984-05-08 1985-11-22 Nippon Kogaku Kk <Nikon> 同時消録型光磁気記録方式並びにそれに使用する記録装置及び記録媒体
US4638470A (en) * 1984-05-09 1987-01-20 Xerox Corporation Apparatus using beam splitter cube with specific characteristics for reading information recorded in a magneto-optic medium
US4858218A (en) * 1984-09-12 1989-08-15 Nikon Corporation Optical recording medium and reproducing apparatus
JPH0664821B2 (ja) * 1984-12-30 1994-08-22 オリンパス光学工業株式会社 記録媒体の装着装置
JPS61160845A (ja) * 1985-01-09 1986-07-21 Nippon Kogaku Kk <Nikon> 光デイスクの記録再生装置
US4712207A (en) * 1985-03-18 1987-12-08 Rca Corporation Apparatus for erasing information on a reversible optical recording medium
US5062009A (en) * 1985-03-19 1991-10-29 Canon Kabushiki Kaisha Recording and/or reproducing apparatus having, in addition to a recording medium, memory means for memorizing information reproduced from the recording medium
US4833662A (en) * 1985-05-02 1989-05-23 Olympus Optical Co., Ltd. Reproduction apparatus for a magneto-optical recording medium
FR2581784B1 (fr) * 1985-05-10 1994-03-25 Thomson Alcatel Gigadisc Support d'information a pregravure et son dispositif de lecture optique
JPS61276103A (ja) * 1985-05-31 1986-12-06 Canon Inc 光磁気メモリ記録方法
CA1259133A (en) * 1985-06-28 1989-09-05 Hirohisa Yamaguchi Rotary recording medium having a guide track and recording and reproducing apparatus therefor
EP0220023B1 (de) * 1985-10-08 1993-07-07 Sharp Kabushiki Kaisha Magnetooptische Speichervorrichtung
JPS62109236A (ja) * 1985-11-07 1987-05-20 Teac Co トラツキングサ−ボ装置
JPS62110644A (ja) * 1985-11-08 1987-05-21 Sharp Corp 光磁気デイスクの記録方式
JPS62162261A (ja) * 1986-01-10 1987-07-18 Hitachi Ltd 光磁気記録再生装置
US4872078A (en) * 1986-04-24 1989-10-03 International Business Machines Corporation Method and apparatus for encoding and direct overwriting of magneto-optic data
US5014252A (en) * 1986-10-08 1991-05-07 Nikon Corporation Over write capable magnetooptical recording method using two beams, and magnetooptical recording apparatus therefor
US4939717A (en) * 1986-10-31 1990-07-03 Matsushita Electric Industrial Co., Ltd. Method and apparatus for erasing and recording information using three power levels
US4789972A (en) * 1986-12-22 1988-12-06 International Business Machines Corporation Selectively controlling the erasure in a magneto-optic recording medium
US4982389A (en) * 1987-01-30 1991-01-01 Hitachi, Ltd. Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium
US4939713A (en) * 1987-02-27 1990-07-03 Matsushita Electric Industrial Co., Ltd. Erasable optical disk and optical information recording/reproduction apparatus
AU3351589A (en) * 1988-03-10 1989-10-05 Storage Technology Corporation Apparatus for writing data on a magneto-optic recording medium
US5309416A (en) * 1988-04-26 1994-05-03 Canon Kabushiki Kaisha Method and apparatus for initializing intermediate region between tracks on magnetooptical recording medium
DE68912390T2 (de) * 1988-04-26 1994-06-09 Canon Kk Verfahren und Vorrichtung zur Initialisierung eines Gebietes, das zwischen den Spuren eines magneto-optischen Aufzeichnungsmediums liegt.
US4962492A (en) * 1988-04-29 1990-10-09 Laser Magnetic Storage International Company Magneto-optic data recording system, actuating device therefor and method of providing same
JP2004022056A (ja) * 2002-06-14 2004-01-22 Fujitsu Ltd 磁気記録媒体初期化方法、磁気記録媒体信号転写方法、磁気記録媒体信号処理装置及び両面垂直磁気記録媒体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control
NL160138C (nl) * 1972-05-11 1979-09-17 Philips Nv Inrichting voor het uitlezen van een vlakke registratie- drager.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953150A (en) * 1981-11-09 1990-08-28 Canon Kabushiki Kaisha Optical recording apparatus having improved erasing capability
JPS5883347A (ja) * 1981-11-09 1983-05-19 Canon Inc 光磁気記録装置
JPS58128037A (ja) * 1982-01-22 1983-07-30 Sharp Corp 磁気光学ヘツド
JPH0338663B2 (de) * 1982-01-22 1991-06-11 Sharp Kk
JPS5982646A (ja) * 1982-10-29 1984-05-12 Sharp Corp 光磁気記憶装置
JPH0581977B2 (de) * 1982-10-29 1993-11-17 Sharp Kk
JPS59113507A (ja) * 1982-12-21 1984-06-30 Nec Corp 光磁気記録再生消去方法及びその装置
JPH0551975B2 (de) * 1982-12-21 1993-08-04 Nippon Electric Co
EP0144436A1 (de) * 1983-04-22 1985-06-19 Matsushita Electric Industrial Co., Ltd. Optische aufzeichnungs- und wiedergabevorrichtung
EP0144436A4 (de) * 1983-04-22 1987-10-22 Matsushita Electric Ind Co Ltd Optische aufzeichnungs- und wiedergabevorrichtung.
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
JPH053642B2 (de) * 1983-05-20 1993-01-18 Canon Kk
DE3433377A1 (de) * 1983-09-26 1985-04-11 N.V. Philips' Gloeilampenfabrieken, Eindhoven Verfahren zum schreiben von informationen in einem magnetooptischen aufzeichnungstraeger, anordnung zum durchfuehren des verfahrens und magnetooptischer aufzeichnungstraeger zur verwendung in einer anordnung zum durchfuehren des verfahrens
FR2552576A1 (fr) * 1983-09-26 1985-03-29 Philips Nv Procede d'enregistrement d'information dans un support d'information magneto-optique, dispositif de mise en oeuvre du procede et support d'information magneto-optique a utiliser dans un dispositif de mise en oeuvre du procede
JPH0522305B2 (de) * 1983-12-19 1993-03-29 Matsushita Electric Ind Co Ltd
JPS60129954A (ja) * 1983-12-19 1985-07-11 Matsushita Electric Ind Co Ltd 光磁気デイスクレコ−ダ
JPS61950A (ja) * 1984-06-13 1986-01-06 Hitachi Ltd 光磁気情報記憶方法及び装置
EP0164745A2 (de) * 1984-06-13 1985-12-18 Hitachi, Ltd. Methode und Gerät für die Informationsaufnahme/Wiedergabe gebrauchmachend von, durch Licht induzierte thermo-magnetischen Effekten
US4993011A (en) * 1986-03-19 1991-02-12 Sanyo Electric Co., Ltd. Optical recording apparatus with simultaneous erasing and recording
JPS6374146A (ja) * 1986-09-18 1988-04-04 Fujitsu Ltd 光磁気デイスクの記録方法
JPH05777B2 (de) * 1990-04-13 1993-01-06 Sanyo Electric Co
JPH0329138A (ja) * 1990-04-13 1991-02-07 Sanyo Electric Co Ltd 情報読取装置
WO1997006530A1 (fr) * 1995-08-09 1997-02-20 Hitachi, Ltd. Dispositif de disque optique
US6125084A (en) * 1995-08-09 2000-09-26 Hitachi, Ltd. Optical disk device using a recording medium structurally arranged to generate a recording clock
US6414912B1 (en) 1998-02-04 2002-07-02 Hitachi, Ltd. Optical disk device using a recording medium structurally arranged to generate a recording clock
US6545954B2 (en) 1998-02-04 2003-04-08 Hitachi, Ltd. Optical disk device using a recording medium structurally arranged to generate a recording clock

Also Published As

Publication number Publication date
US4472748A (en) 1984-09-18
JPH0321961B2 (de) 1991-03-25

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